Spring-sleigh.



No. 861.819. PATENTED APR. 30, 1907. DB WITT O. MARKHAM. SPRING BLBIGH.

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No. 85l.819.

. v PATENTBD APR. 30, 1907. -DE WITT G. MARKHAM.

SPRNG SLEGH.

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supported as hereafter shown.

.Port Leyden, in the county of Lewis and DE WITT C. MARKHAM, OF PORT LEYDEN, NEW YORK.

Specification cf Letters Patent.

Patented April 30, 1907.

Application filed May 4, 1904. Serial No. 206,264.

Tn Il l 10710711, it muy concern: l

Re it known thatl I, DE Wi'rT C. MARKHAM, a citizen of the United States, residing at 3 l State of New York, have invented certain neu` and useful Improvements in Spring- Sleighs, of which the following is a specification, reference being had therein to' the accompanying drawings.

)Iy invention relates to an improved spring sleigh, and I declare that the following is a full, clear, concise and exact. description 4 thereof, suilicient to enable one skilled in the art to make and use the saine, reference bel ing had to the accompanying drawings in which like letters and figures refer to like pai'ts throughout.

M v invention has to do with means whereby the box or platform of a sleigh may be given a spring movement and be equalized in its movement no matter at what point the pressure or load may he applied, Vand it con- .sists of the different parts and construction i and the form, arrangement and combination i of the same as herein disclosed.

In the drawings Figure 1 is a perspective View of a pair of runners with equalizer and springs thereon. Fig. 2 is a plan view of the saine, broken lines indicating parts removed, the knees X: rave on one side being cutaway on the line -x in Fig. 1. Fig. 3 is a partial Q section view of the connection between the E equalizer bars, and Fig. 4 is a side view. of the saine with a small port-ion of one of them ont away. Fig. 5 is 'a side view showing a different spring. Fig. 6 is a perspective view of one of the mountings of the box on the equalizer frame. F ig'. 7 is a perspective view with a. different method of mounting and difiercnt spring. Fig. 8 is a side view of `thc same. Fig. 9 is an end view of the construction shown in Fig. 8 and Fig. 10 is a partial side view showing a diferent spring.

Referring to the figures more in detail, A illustrates the runners and B the raves of a sled, the saine being supported by knees C the raves being connected across the front by bar D to which the draft is applied and the parts being suitably braced by rods (l.

E represents the bon or platform suitably As is usual, the width between the raves is less than that between the runners .and the knees are accordingly constructed to have an inward incline from the runners tothe raves.

freely on the bars F and F.

I the purpose.

Upon the knees I pivotallymonnt an equalizer frame which'is composed of bars F and F' which are similar 1n construction, G and I Gr'y which are also similar in construction, and

the transverse bars Il and II and having the braces i. The side bars are pivotally mounted on the knees as shown atj'andf, and g and g', the frame being mounted between the. runners and raves. The adjacent ends of the said bars are pivotally connected, as particularly shown in Fig. 3, with inter-fitting parts, the end of bar G being shown as {itt-ing in the forked end of F. Through the end F is passed the boltf. The end of bac.1 G is formed with a slotl g, as shown in Fig. 4, wherein one of the forked portions of bar F is cut away. The bolt f carries a friction roller g" so that the bars G and G can play At. the outer end each of the bars is cut out to receive the ends of the cross bars II and Il' which are in cross section of the general form shown in Fig. 4. Beyond the opening formed in the side bars to receive the ends of the cross bars the side bars are extended and constructed to be clamped closely onto the cross hars by bolts and nuts i (Fig. 41). The side bars are to be given substantially the same webbed form in cross section as the cross hars. Of course, l do not limit myself to this form of bars or this style of connection, but they seem to me to be suitable and convenient for The parts described when properly connected make an eqiializer'frame, pivotally supported on the knees, the adjacent side bars being pivotally connected at their inner ends so that the cross bars at the outer end of the side bars move in unison up and down, the whole frame having the necessary strength and rigidity. l

The box or platform is mounted on the equalizer frame in a manner which permits the play of the frame in its bearing on the box or platform. In the present case I illustrate this as accomplished by a single mounting at the forward end of the box or platform, the parts of which are particularly shown in Fig. 6 wherein E illustrates af'clip l which is securely mounted on the box or latform either directlv or bv means of a P ,i plate E secured thereon.

IOO

This particular mounting has the clip E elongated so as to A give freedom for the equalizer to play horizontally on the box as the cross bars rise or fall. The cross bar is provided with a. collar c, which is provided with groove e to receive the clip l5', and give a proper contact surface or bearing on the p latl'orm or box structure, and also to prevent side play of the box on the frame. l At the rear l have two mountings at the pointsc, which are substantially like the one already shown, except that chp E is not extended to permit play, the intention being to have the mountings lixed against horizontal movement ol'V the box on the frame but permit free up and down movement together. Similar collars are Velsewhere provided to give sullicient bearing ofthe box on the frame.

The normal condition is that the outer ends of the equalizer frames should be in elevated position, and to maintain this l i vide springs, and illustrate dil'erentkinds of the same.. In Fig. 1 l illustrate a curved spring I, there bcingv'one for each series of sideibars.

The outer or free ends of the spring are seated to play on the under side of the raves, the intermediate part being seated on the side bars and secured thereon between clips i. ln Figs. .2 and 5 l show a diamond spring J. ln Fig. 2 it does not appear on one side but is shown in part on the other side where the rave has been cut away. This spring is mounted intermediate of the ends between the clips i on the side bar and clips i on the raves as shown in Fig. 5. Where the spring is shown in Fig. 2 the lower part does not appear, it being omitted to show the mounting of the connection between the side bars. 1n Figs. 7, S and 9 is illustrated a ditl`erent sprin r which is also differently mounted. li is a s eeper or cross bar which is secured to the underside of the box or platform. The spring 1i has the general iorm shown in t iose figures and is pivot-ally stpported on the raves by clips k and is secure to the bar K at its central part as illustrated at 1:. Fig. 10 shows a further variety of spring, L, which consists of a coil secured at one end underneath the rave and at the other end on the side bars. The urpose of each style of spring is readily um erstood to form resistanc-e or support to the load which by means of the equahzer is suitably distributed.

Having described my invention, what I -elaim as new, and desire to secure by Letters Patent., is-

1. In a spring vehicle, the combination with the running parts and a load support, of a frame comprising lever members pivotally mounted on the running parts and extending front. and rear for the even support of the load, and spring means transverse the contral part of the load. support and supporting it on the ruiming parts by attachment of the spring means to the running parts and to the load support. Y

- 2. ln a spring sleigh having a load support,

. running parts and a single transverse spring attached 'to the latter and supporting the former thereon, the combination of a set oll equalizer' hars on cach-side of the running parts. cach srt comprising bars pivotally mounted on the ruiming parts and slidabhl and pivotally connected at their inner ends and transverse bars connecting the outer ends of cach set to support thc load and permit. its l'rce up and down motion, substantially as described.

3. ln a construction ol the character described having a load support, running means and a single transverse spring attached to the load support and the runningr means, the combination of au equalizer frame having members pivotally mounted on the running` means on cach side ofthe' structure and conncctcd at their outer ends to l'orm a frame rigid from side to side and having its said ends moving up and down simultaneously, substantially as described.

4. ln a spring vehicle, the. combination with running and load supporting means, of a spring connection between the two, and an equalizer frame comprising bars pivotally mounted on the running means and supporting the load both front and rear of the said spring nic-ans and beine' connected to the load support at one curl with an elongated bearing permitting reciprocal movement of the adjacent end of the vframe and the load supporting member.

5. ln a spring vehicle, the combination with running means, of a load supporting means, an equalizer frame of parallelogrammie form comprising side bars pivotallv mounted on the ruiming means and slidingly pivotally connected each to the other at the inner end and loosely supporting at their outer ends the load supporting means to permit reciprocal play of the load supporting means and one end of said frame thereunder.

6. In a spring vehicle, the combination with ruiming means, of a load supporting means, an equalizer frame of parallelogrammic form comprising side bars pivotally mounted on the runninv means and slidingly pivotally connecteda each to the other at the iimer end and loosely supporting at their outer ends the load supporting means.

7. In a sleigh, runners and raves connected by means of knees, with equalizer bars hinged between the runners and the raves so as to work freely up and down, a load platform pivotally supported by the bars, and a spring hinged to the raves and secured to the IOO IIO

platform in such a manner as will allow of a v free up and down motion.

S. ln a vehicle provided with a load support and ruiming members and having the spring support ot the former on the latter, a frame comprising bars pivoted on the running members with their adjaeent ends pivotally connected and their outer ends provided to carry the load support, one of said lwnring ends of thc frame having n sliding ronntction with tho lond supporting 1110mhsr.

t). ln n construction of th(` character described providod with ruiming parts und n load plm-form, :in equalizcr fnmv having n plurnlit)v of trnnsvtrsc ni'cmlx rs for supporting thtl load platform. :md spring moans transverse of the platform midway of its length supporting the platform through vomurtion of thr-r spring tllirvwitli and by thrcon'ioction of thi- `spring at its lends to tho running partsysubstantially als shown.

l0. ln n construction of the chnrnctrr d-isrrihcd comprising n load platform und running parts, spring nit-funs mounts-d to support thtl former relatively to the lutti-r, and laver members pifotnll)Y mounted on thev latter and slidingly connected at their adjacent, ends and boing :it their outer onds nduptud to support the platform.

l1. ln n construction such :ist described, thv Combination with running moans und :i

loud supporting nunns, of un uqunliztr frame of parallologrznmnic form romprising pivot- 

